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<title>Problem 2234. -- Sgu394 Berhatton -- 衡阳八中OJ离线版-2012-02-29</title><center><h2>2234: Sgu394 Berhatton</h2><span class=green>Time Limit: </span>10 Sec&nbsp;&nbsp;<span class=green>Memory Limit: </span>256 MB<br><span class=green>Submit: </span>115&nbsp;&nbsp;<span class=green>Solved: </span>32<br>[<a href='submitpage.php?id=2234'>Submit</a>][<a href='problemstatus.php?id=2234'>Status</a>][<a href='bbs.php?id=2234'>Discuss</a>]</center><h2>Description</h2><div class=content><div style="text-indent: 24pt"><span style="font-size: 12pt">XP</span><span style="font-size: 12pt">在Berhatton city 开了很多Pizza店。</span></div>
<div style="text-indent: 24pt"><span style="font-size: 12pt">在长期的经营过后，XP发现很多店其实是不必要的。XP Pizza连锁店的标语是&ldquo;一切只需10分钟&rdquo;。每个Pizza对应了平面上的一个点（x，y）。两个Pizza点（x<sub>1</sub>，y<sub>1</sub>）和（x<sub>2</sub>，y<sub>2</sub>）之间的距离就是 |x<sub>1</sub>-x<sub>2</sub>|+|y<sub>1</sub>-y<sub>2</sub>|。当有K个以上的Pizza店的员工能在10分钟之内到达同一个Pizza店，那么这个Pizza店可能就要关门大吉啦。</span></div>
<div style="text-indent: 24pt"><span style="font-size: 12pt">现在XP想知道，有多少个Pizza店需要关门。</span></div></div><h2>Input</h2><div class=content><div><span style="font-size: 12pt">第一行两个数N，K。接下来N行，每行3个整数x，y，distance。其中（x，y）表示Pizza店的坐标，distance表示这个Pizza店的员工能在10分钟内走过的距离。</span></div></div><h2>Output</h2><div class=content><div>&nbsp;</div>
<div><span style="font-size: 12pt">第一行一个整数Ans，表示有多少个Pizza店需要关门。</span></div>
<div><span style="font-size: 12pt">如果Ans&ne;0，那么接下来一行有Ans个数用空格隔开，按编号升序排列，表示编号对应的Pizza店需要关门。</span></div>
<div><span style="font-size: 12pt">Limits</span></div>
<div><span style="font-size: 12pt">2</span><span style="font-size: 12pt">&le;N&le;</span><span style="font-size: 15pt">10<sup>5</sup></span></div>
<div><span style="font-size: 12pt">1</span><span style="font-size: 12pt">&le;K&le;N-1</span></div>
<div><span style="font-size: 12pt">0</span><span style="font-size: 12pt">&le;x，y，distance&le;</span><span style="font-size: 16pt">10<sup>9</sup></span></div></div><h2>Sample Input</h2>
			<div class=content><span class=sampledata>2  1<br />
0  0  1<br />
1  0  1<br />
</span></div><h2>Sample Output</h2>
			<div class=content><span class=sampledata>2<br />
1 2</span></div><h2>HINT</h2>
			<div class=content><p></p></div><h2>Source</h2>
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